Sash operating mechanism



Jan 16, 1934 E. L. ACKERMAN sAsa OPERATING MEcHANrsM 2 Sheefs-Sheet'l 1 Filed OCT?. 14. 1931 fyi;

Y INVENTOR ba/MA ,4c/faena ATTORNEY.

`1an. 16, 1934. E ACKERMAN l 1,943,359

SASH OPERATING MECHANI SM Filed Oct. 14, 1931 2 Sheets-Sheet 2 ATTORNEY.

Patented Jan. 1c, 1934 PATENT yOFFICE Y 1,943,359 .sAsH OPERATING MECHANISM Edward L; Ackerman, Detroit, Mich., assigner to Ackerman-Blaesser-Fezzey, Inc., Detroit, Mich., a corporation of Michigan Application October 14, 1931.A Serial No. 568,795

4 Claims.

This invention relate to sash operating mech-- vision of a sash operating mechanism which may b'e used to raise or lower a sash in which the front edge thereof is cut at an angle to closely -conform to the angleof a slanting windshield and which will hold the opposite edge of the sash in spring pressure contact with the runway or guide channel in which it is adapted to slide.

Another object of the invention is in the provision of a sash operating mechanism for raising or lowering a sash, one edge ofthe sash being guided in its vertical movement and the mechanism so designed as to hold the guided edge in 2@ pressure Contact with' the runway in which' the edge of the sash is adapted to slide.

Another object of the invention is in the provision of a sash operating mechanism comprising a pair of lifting arms each provided with aspring, one spring arranged to exert a downward pressure on the sash supporting end of one of the arms and the other spring arranged to exert an upward pressure on the sash supporting end of the other arm.

A still further object of the invention is in the provision of a sash operating mechanism which will hold the sash against vibration at all times but which will permit the sash to be easily raised or lowered as desired.

These objects and the several novel features of the invention are hereinafter more fully described and claimed and the preferred form of constructionl by which these objects are attained is shown in the accompanying drawings in which- Fig. 1 isa partial side elevational view of an automobile body having my sash operating mechanism installed therein.

Fig. 2 is a top plan View of a sash operating mechanism.

Fig. 3 is a section taken on line 3-3 of Fig. 4.

Fig. 4 is an elevational View of my improved sash `operating mechanism.

Fig. 5 is a detailsection taken on line 5-5 of Fig. 4.

Referring to the drawings the automobile bod 1 is provided with a door 2 having the aperture 3 therein, the same adapted to be closed by the sliding sash 4. The forward edge 5 ofthe sash is sloping, as shown in Fig. 1, to closely conform to the slope of the windshield 6. It will thus be seen that the upper edge 7 of the sash is shorter than the lower edge 8 and when the sash is slightly, lowered the edge 5 will move away from the guide in which it is positioned when completely raised and will only be guided by the lower forward corner thereof which engages the guide or runway 10 extending below the aperture 3. The rear edge 11 of the sash will be guided throughout its length in a runway or guide channel 12.

A metal strip 13 has its ends secured to the lower edge of the sash and is spaced therefrom intermediate its ends to provide a runway for the rollers 14 and `15 secured tothe outer end of the respective lifting arms 16 and 17. The arm 16 is xedly mounted upon the pin 18 adjacent one face of the gear 19 and is riveted at 20 thereto.

'The pin 18 is rotatably mounted in the plate 21 and is iixedly secured to the gear 19 and is slotted at 22 to receive one end of the spring 23 the opposite end of the spring being held by the tongue 24 extending from the plate 21. By referring to Fig. 4 it will be seen that the tendency of the spring 23 is to rotate the pin 18 in a clockwise direction thereby causingthe outer sash engagingv end of the arm 16, carrying the roller 14,110 be forced upwardly thereby holding the rear upper edge of the sash 4 in pressure contact with the guide channel 12 in which it slides. The arm 17 is xedly mounted upon the pin 25, the same being similar in construction to the pin 18, and is riveted at 26 to the gear 27. The pin 25 is slotted at 28 to receive one end of the spring 29 while the opposite end of the spring abuts the tongue 30 struck from the plate 21. It will be noted that the spring 29 tends to move the free end of the arm carrying the roller 15 downwardly thereby caus=1 ing the lower portion of the edge 11 of the sash 4 to be held in pressure contact against the runway 12. A pinion 31 is mounted upon the pin 32 extending through the plate 21` and is positioned against one face of the plate and engages the gear 19.

A gear 33 is likewise mounted upon the pin 32 and is positioned against the opposite face of the plate and engages the pinion 34 operable by rotation of the shaft 35 through the clutch 36, the same being of any desired construction well known in the art to lock the sash in any position in which it is desired to be left. It will be underthe preferred form of construction of a roller for use in connectionv with the window regulator shown although rollers of different structural details may be utilized. It will be noted that a stud 40 is secured at the end of one of the lifting arms and is provided with an enlarged head 41. washer 42 is loosely mounted upon the stud 40 and is pressed toward the enlarged head 41 by means of the spring 43 surrounding thestud 40. It will thus be seen that the lower edge of the sash will be gripped .between the enlarged head 41 and the washer 42 under pressure exerted by the spring 43. This structure ofthe sash engaging roller permits the axisI of the roller to be positionedv at one side or the other of a center line between the upper and lower bars of the runway formed by the metal strip 13. It will be noted that when the lifting arms are moved from a position on the horizontal center line of the pins 18 and 25 downwardly that the gripping action on the lower edge of the sash engaging rollers 14 and 15 will not tend to move the sash in a lateral direction as the rollers are moving toward each other.

When the arms are being movedfrom their horizontal position upwardly or from their highest position jdownwardly to their horizontal center line then the roller 15, due to the action of the spring 29 and the play between the gears 19 and 27, will cause the lower corner of the straight-side 11 of the sash to move toward the runway in which it'slides and during this movement the roller 14 will tend to move the upper corner of the straight edge 11 of the sash into the guide in which it slides. It will be noted that upon operation of the shaft 35 that the pinion 34 will be rotated turning the gear 33 and the pinion 31 and rotating the gears 19 and 27 in opposite directions thereby moving the sash engaging rollers 14 and 15 either upwardly or downwardly as desired.

From the foregoing description it becomes evident that I have provided a sash operating mech-i anism in which a pair of arms are adapted to engage the lower edge of a sash formed with a straight edge and a sloping edge, the mechanism Aso constructed as to prevent tilting of the window throughout its movement and to prevent vibrations .of the sash when partly opened, and further that the device is simple in operation and consists of few parts which will not easily get out of order.

Having thus fully describedmy invention, its

utility and mode of operation, what I claim and desire to secure by Letters Patent of the United States isA A 1. A device of the character described, including a sash, means for engaging the sash at two points for impartingvertical movement to the same, an actuating device for said sash engaging means, and spring means for exerting downward pressure on one of the sash engaging means, and a second spring means for exerting upward pressure on Vthe other.

2. In a sash operating mechanism, a sash, a pair of lifting arms, each arm adapted to engage the lower edge of the sash, means for imparting movement to both lifting arms, a sash counterbalancing spring on one of the said arms tending to raise the sash, and a spring tending to turn the'other arm to exert a downward pressure on the sash toward one edge thereof.

3. In a sash operating mechanism, a sash, a stationary plate, a pair of lifting arms, one end of each pivotally connected to the plate,`the opposite end adapted to engage the lower edge of the sash, means for operating the lifting arms, and spring means for exerting downward pressure on the sash engaging end of one arm and upward pressure on the other.

4. In mechanism for operating a sash having one edge riding in a vertical runway and the opposite edge being inclined to the vertical whereby said edge is practically unsupported when the sash is in open position and in which the bottom edge is provided with a slot, a. pair of lifting arms each having a roller at one end engaging in the said slot, a plate to which the opposite ends of the arms are pivotally mounted, the point of pivoting of the arms being in closely adjacent relation and the arms extending respectively outwardly therefrom toward the respective opposite edges of the sash, a gear attached to each arm at the pivot point and meshing together, means for rotating one of the gears to effect movement of the sash through movement of the lifting arms; a spring on the gear for the arm extending away from the said vertical runway for the sash tending constantly to raise the sash, and a spring on the gear for the other arm exerting downward pressure on the sash adjacent the vertical runway, said spring, gear and lifting arm arrangement providing a structure tending to at all times cause the sash to ride in pressure contact with the said vertical runway.

EDWARD L. ACKERMAN. 

